Machine for applying strips to blanks



May 5, 1931. H. J. 6055 MACHINE FOR APPLYING STRIPS TO BLANKS Filed Nov.15, 1929 3 Sheets-Sheet l Jzzve zzfo .Ha 1'0 in! J GOJJ May 5, 1931. H.J. GOSS MACHINE FOR APPLYING STRIPS TO BLANKS is, 1929 s Sheets-Sheet 2Filed Nov.

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MACHINE FOR APPLYING STRIPS T0 BLANKS Filed Nov. 15. 1929 KSheets-Sheet3,

E i a i i z i i b 5 11w i l f f Jazuentozt l .Hafloid J 6am: I I E a I vPatented Ma 5, 1931 UNITED STATES PATENT OFFICE HAROLD J. GOSS, OINASHUA, NEW HAMPSHIRE, ASSIGNOR TO THE INTERNATIONAL PAPER. BOX MACHINECOMPANY, OF NASHUA, NEW HAMPSHIRE, A CORPORATION 01 MAINE MACHINE FORAPPLYING STRIPS TO BLANKS Application filed November 15, 1929. SerialNo. 407,470.

This invention relates to the production of adhesively united blanks andstrips, and has particular reference to the preparation of blanks forpaper boxes with strips of thin material secured to predetermined areasthereof. p

In the manufacture of paper bo'xes,it is frequently desirable thatcertain ortions thereof shall have strips of paper ad esively securedthereto and, in the interestof econom} in the cost of production of theboxes, it is preferablethat the strips shall be applied to the blanksbefore such blanks are converted to box form either as set-up boxes orflat folded boxes, or for making articles other than boxes. And it isimportant that the strips shall be accurately located when aflixed tothe blanks, not only as to lateral position thereon but also as tolongitudinal position, with no end portions of the strips projecting.beyond the edges of the blanks unless for some boxes such projection ofthe strips is desired. 7 n

The object of the present'invention is to provide a machine capable ofrapidly effecting the production of articles such as box blanks eachhaving one-or more strips of paper or other desired material adhesivelyconnected to one or more predetermined areas thereof for such purposesas, for instance, is explained in Letters Patent No. 1,634,073 issuedJune 28, 1927, to E. W. Labombarde.

With the above stated object in view, the

invention consists in the construction and combination of partssubstantially as-hereinafter described and claimed.

Of the accompanying drawings which illustrate so much of one embodimentof the invention as is necessary for an understanding of the same:

Figure 1 is. a side elevation, partly in secthat portion of the completemachine embodying the present invention. 7

Figure 2 is a plan view of the same but omitting some details.

Figure 3 represents a detail section on line 3-3 of Figure 2.

Figures 4, 5 and 6 are detail views, on a smaller scale than Figure 1illustrating successive steps or points of the rogress of a blankthrough the machine and the application of a strip thereto;

Figure 7 is a plan view of one type of blank having strips securedthereto by mechanism such as illustrated in the other views.

Similar reference characters indicate similar parts or features in allof the. views.

Portions of the frame of the machine are illustrated at 12. One of theside members of the frame is omitted from F i ure 2. In the completemachine, as will e readily understood without an illustration thereof,the omitted side member is a duplicate of the illustrated member. Theparts illustrated are suflicient to apply a single strip to a blank, andthe machine may be so employed. But when two strips a (see Figure 7) areto be applied to a blank I), the machine includes two of the mechanismsillustrated by Figures 1, 2 and 3, such two mechanisms being duplicatesand side by side... For present puroses it is unnecessary to illustrateboth.

f course in such machine the two side members of the frame are connectedby suitable tie rods one of which is illustrated at 13.

By suitable feeding mechanism such as is well-known in box-makingmachinery, blanks are delivered in timed spaced relationship, bycarrying chains 14 having pushing lugs 15, to the mechanism included inthe present invention. The delivery end of each chain is mounted. on asprocket 16 carried by shaft 17. For the reason hereinbefore explained,Figure 2 illustrates but one of the usual pair of chains. a

A glue-box 18 (Figs. 2 and 3) is supported by a carriage mounted at oneend on a slotted cross bar 19 to provide for lateral adjustment.Rotating in the glue box is a roll 20, the coating of glue thereon beingcontrolled by a customary doctor roll 21-. Such coating istransferred bya roll 22 to the member whichapplies glue to a blank fed along below it,said member comprising'a disk 23 having a raised peripheral ortionhereinafter referred to as the gluing arc 24. The short I shafts of saiddisk and rolls are supported bv the carriage 25 which also supports theg ue box.

Below the disk 23 is a roll 26 carried by shaft 27 having a sprocketconnected by a chain 28 with the shaft 17. Another sprocket of the shaft27 is engaged by a drive chain 29. The gearing connecting the shafts ofthe gluing mechanism is illustrated asa group at 30.

The strip a, .usually of paper, is supplied from a roll enclosed in areel 31 supported by a fixed upright 32 the lower end of which issecured at 33 to a casting 34 which is mounted on the cross bars 35 andlaterally adjustable thereon. Said casting is provided with a pair ofstrip-guiding rolls 36, 37, one above the other, and with another pairof rolls 38, 39, side by side. And rising from the casting is an upright40. A roll 41 supported by said uprilglht may be set at a greater orlesser heig t by means of the slot in the upright.

Pivoted at 42 to the casting 34 is a rocker arm 43 having a roll 44which is acted upon by a cam 45 carried by a shaft 46. A spring 47 tendsto keep the rocker raised. A rubber block 51 secured to the under sideof the rocker arm coacts with one of the bars 35 to grip the strip a aspresently described.

The end of the rocker carriesa strip weakener 52 preferably a toothedblade. When the rocker is depressed, the member 52 so acts on the stripa, as by forming a line of perforations across it, that the strip can besevered at that point by a pulling action effected by mechanlsm yet tobe described. The elastic block 51 at the same time so grips the stripagainst the bar 35 that the described action of the weakener 52 will notdraw the strip along. Y

Extending through the casting 34 is a rock shaft 53 having an arm 54projecting from it over the path of the strip a, and carrying ayieldable presser 55 which coacts as hereinafter described with a plate56 that is supported by the casting 34. The rock shaft 53 (Figs. 2 and3) has another arm 57 provided with a roll 58 that is acted upon by acam 59 carried by the shaft 17. A spring 60 connects the arm 57 with anarm 61 fixed to the tie rod 13, said spring having such strength as tocause the presser 55 to bear strongly on the strip a and grip it firmlyon the late 56 at the stated times hereinafter descri ed.

From the mechanism so far described the stri a, and also intermittentlyadvanced blan 5, pass over a lower roll 62 and under an upper roll 63,said two rolls bein so spaced that there can be no pinching o the stripalone between them. That is, there must be a blank b as well as thestrip a between said two rolls in order tocause any feeding or pullingaction by said two rolls.

The roll 63 has two recesses in its periphery, one wider than the other,as illustrated respectively at 64, 65, the purposes of which will beexplained durin the description of the operation of the mac ine.

The roll 63 is constantly driven through the medium of any suitablegearing not necessary to illustrate, such driving being in proper timedrelationship to accord with the timing of action of the pushing lugs 15.

The blanks and the overlying strip thereon issuing from between the rols of rolls 66 (Figs. 1, 4, 5 and 6) which, as Well as the rolls 62, 63,in the operation of the machine, have a higher peripheral speed than thespeed of travel of the pushers 15.

To prevent the strip a from having any retrograde movement relatively tothe plate 56, a spring detent 67 is provided (Fig. 1), said detent beinsecured to the casting 34 and having its ree edge bearing on the strip.

When the mechanism is constructed to simultaneously apply a plurality ofstripes a to each passing blank (see Figure 7), the mechanismillustrated by Figures 1 and 2 is duplicated, and one or both of suchmechanisms is so mounted as to be laterally adjustable to suit the widthof the space between the two arallel strips. To enable the mechanism, wether single or duplicated, toapply strips of greater or lesser lengthsto blanks of corresponding len h, theroll 23 is removable and replaceabe so that the machine may have a roll provided with a projecting gluingarc 24 the length of which are will correspond with the length of thesection of the 62, 63, have. a pulling action imparted thereto by apair.

strip a that is to be applied to the blank. For

the same reason the roll 63 is removable and replaceable so that onehaving properly spaced recesses 64, 65, may be employed. And the roll 41is adjustable to proper vertical position to suit the length 0 the stripsections to be applied to the blanks.

When the machine is prepared for operation, the stri a is threaded asillustrated by Figure 1, wit its free end extending between the rolls62, 63, (Fig. 4), and with the guide roll 41 located at such height thatthe length of the strip from the wea ener 52 to the nip of the rolls 62,63, equals the length of the surface of the gluing are 24. This is whenthe machine is to be used to apply stri sec- 'tions to blanks throughoutthe len'gt s of said sections. If it be desired that the applied stripsections shall have free or unsecured ends, a roll 23 will be employedin the machine which roll will have a gluing arc of less length than thestrip sections thatare to be successively applied to blanks. With thelast-mentioned arrangement, the stripes of lue that will be applied tothe blanks wil be shorter than the strip sections a and therefore theends of'the latter will not be stuck to the blanks.

When the machine is started, nothing happens until a blank is fed by thepushers 15,

excepting that the weakener 52 and the gri per 55 will be oscillating.The stri a will not be advanced because the space tween the rolls 62,63', exceeds the thickness of said strip. But when a blank I) is pushedalong by the lug 15 or its equivalent, and the front edge thereofarrives between the rolls 62, 63, under the strip (Fig. 5), the combinedblank and strip are gripped and drawn along and gass to the nip of thepulling rolls 66 6) ince the, arriving blank just mentioned has had astripe of glue applied to its upper surface by the gluing are 24, thestrip and blank are adhesively united as they. pass along between therolls.

The timing is such that the presser 55 is raised during the first partof the pulling operation just described, but'is lowered to grip thestrip after the last preceding line of cross perforations made by theweakener 52 has passed said presser, thereby holding the strip at therear of its weakened point so that the section of the strip which is onthe blank will be pulled away from the remaining portionof the strip,the weakening of the strip enabling this to be done. And said remainingportion will be stationary until the next blank reaches the postionillustrated by Figure 5 and results in a pullingact-ion being impartedto the strip and blank by the rolls 62, 63.

The timing is also. such that when the breaking away of a strip sectionhas been effected as just described, the end of the now stationary stripwill be in the position illus-' trated by Figure 4, just reaching thespace between the rolls 62, 63. And when the next blank arrives with itsfront edge between said rolls, the recess 64 of the roll 63 will an riveabovethe roll 62. The said recess 64 is to enable the front edge of theblank to reach a position slightly beyond the vertical plane of the axesof the two rolls 62, 63, before an; actual pulling nip or gripiseffected by the said rolls, thereby providing for registrat1on of thefront edge of the blank with the previously located front end ofthe/strip a. Said strip has been stopped by the action of the gripperwith its front end slightly beyolrid the vertical plane of the axes ofthe two ro s. I

The gripping action referred to occurs at the instant that tile rearedge of the blank is leaving the nip of the rolls ,62, 63, andsimultaneously therewith the recess in the roll 63 arrives above therear edge of the blank and its applied strip section. As the blank andstrip section have now reached the rolls 66,

the latter can, and do by their pulling action, separate the appliedsection of the strip from that portion which is then to remainstationary to await the arrival of another blank. If there were norecess 65, the nip of the rolls 62, 63, would pull the strip too far andpossibly cause another parting of it at a wrong point. But the recess 65effects a releasing of all pulling action by the rolls 62, 63, at theproper moment to let the rolls 66 do the pulla blank and strip are cansuccessively detach sections therefrom,

and that the strip material is drawn along and pressed. on the gluestripes of the successively passing blanks, thereby effecting the rapidproduction of such articles as illustrated by Figure 7, or any otherblanks requiring the adhesive application thereto of accurately locatedstrips.

' Having now described my invention, I claim: I

1. A machine for affixing sections of strip material to blanks,comprising means for causing blanks to travel, means for applyingadhesive stripes to the blanks, means for weakening the strip materialat spaced inter vals to provide strip sections, means for applying thestrip material to the adhesive stripes of the blanks, and means renderedeffective by the combined thickness of the blank and strip for partingthe strip material successively at its weakened points.

2. A machine for affixing sections of strip material to blanks,comprising means for causingblanks to travel, meansfor applying adhesivestripes to the blanks, means for wcakenin g the strip material at spacedinter: vals to provide strip sections, means for pressing the stripsections successively on the adits blanks to travel and means forsuccessively detaching sections of predetermined length from a strip,means for bringing the strip sections and blanks into superimposedrelationship, and means for applying stripes of adhesive to those areasof the blanks which are to receive the strip sections, the means fordetaching said sections from the strip including pulling members spacedto act only when etween them.

4;. Ina machine having means for causing blanks to travel and means forsuccessively detaching sections of predetermined length from a strip,means for bringing the stripsections and blanks into superimposedrelationship, and a rotary gluing arc in position 'to successively applystripes .of adhesive to the travelling blanks before the strip sectionsare in contact with the blanks, the means for detaching said'sectionsfrom the strip including pulling members spaced to act only when i ablank and strip are between them.

5. Ina machine of the character described,

the blanks, an intermittently acting strip weakener, means for drawing astrip past said weakener and pressing it on the blan (S, said drawingmeans including pulling members spaced to act only when a blank andst-ripare between them, and guides for the strip intermediate theweakener and said strip-drawing means, oneof said guides being adjustsable to vary the length of a strip section reaching from the weakener tothe strip drawing means.

6. In a machine of the character described, ablank carrier, means forapplying glue to the blanks, an intermittently acting strip weakener,rolls for drawing a strip past said \veakcner and pressing it on theblanks, said rolls being spaced to act only when both a blank and stripare between them, and guide rolls for the strip intermediate theweakener and the strip-drawing rolls, one of said guide rolls beingadjustable to vary the length of a strip sectionrea'ching fromtheweakener to the strip-drawing rolls.

' 7." A machine for aflixing sections of strip material to blanks,comprising means for causing blanks to travel, means for applyingadhesive stripes to the blanks, a rocker having a blade for acting onthe strip material at spaced intervals to provide strip sections, andmeans for pressing the strip sections successively on the adhesivestripes of the travelling blanks, said pressing means including pullingmembers spaced to act only when a blank and strip are between them.

8. A machine for 'aflixing sections ofstrip material to blanks,comprising means for causing blanks to travel, means for applyingadhesive stripes to the blanks, a rocker having a blade for acting onthe strip material at spaced intervals to provide strip sections, agripping member carried by said rocker to hold the strip during theaction of said blade, and means for pressing the strip sections on theadhesive stripes of the trav-' elling blanks, said pressing meansincluding pulling members spaced to act only when a blank and strip arebetween them.

9. A machine for afiixing sections of strip material to blanks,comprising means for causing blanks to travel, means for applyingadhesive stripes to the blanks, means for weakening the strip materialat spaced intervals to provide strip sections, means for pressing thestrip sections successively on the adhesive stripes of the travellingblanks, rolls for exerting a pulling action on the combined blanks andstrip sections, said rolls being spaced to act only when both a blankand strip are between them, and a gripper to hold the strip materialduring the operation of said pulling rolls.

10. A machine for aflixing sections of strip material to blanks,comprising means for one recess being wider than the other.

causing blanks to travel, means for applying adhesive stripes to theblanks, means for weakening the strip material at spaced intervals toprovide strip sections, and means for pressing the strip sectionssuccessively on the adhesive stripes of the travelling blanks, saidpressing means comprising a pair of rolls permanently spaced to avoidhaving any pressing action on the strip material alone, one of saidrolls being peripherally recessed. 12. A machine for affixing sectionsof strip material to blanks, comprising means for causing blanks totravel, means for applying adhesive material to the blanks, means forweakening the strip material at spaced intervals to provide stripsections, and means for pressing the strip sections successively on theadhesive stripes of the travelling blanks, said pressing meanscomprising a pair of rolls permanently spaced to avoid having anypressing action on the strip material alone, one of said rolls havingtwo recesses in its periphery,

13; A machine for aflixing sections of strip material to blanks,comprising means for causing blanks to travel, means for applyingadhesive stripes to the blanks, means for weakening the strip materialat spaced inter- I vals to provide strip sections, a pair of per-.manently spaced rolls for .pressing the strip sections on the blanks,and a pair of rolls for exerting apulling action on the combined blanksand strip sections.

14. A machine for affixing sectlons of strip 1 material to blanks,comprising means ,for causing blanks to travel, means for applyingadhesive stripes to the blanks, means for weakening the strip materialat spaced intervals to provide strip sections, a detent for preventingbackward movement of the strip material, and means for pressing thestrip sections successively on theadhesive stripes of the travellingblanks, said pressing means including pulling members spaced to act onlywhen a blank and strip are between them.

In testimony whereof I have affixed my signature.

HAROLD J. GObS.

